from The Meteoritical Bulletin, No. 110
Northwest Africa 14280 (NWA 14280)
Lunar meteorite (feldspathic breccia)
History: Purchased by Matthew Stream in 2021 from a meteorite dealer in Algeria.
Physical characteristics: Sample displays minor fusion crust. A slice of the interior reveals an assortment of light and dark clasts.
Petrography: (D. Sheikh, Cascadia) Sample is a fragmental breccia primarily composed of angular to sub-rounded anorthitic clasts (up to 3 mm) and isolated mineral fragments set within a fine-grained matrix. Accessory phases include ilmenite and chromite.
Geochemistry: Olivine (Fa41.1±0.7, range Fa40.0-42.1, FeO/MnO=106±16, n=8), Low-Ca Pyroxene (Fs30.2Wo3.9, FeO/MnO=54, n=1), Calcic Plagioclase (An96.9±0.8, range An95.7-98.1, n=20).
Classification: Lunar (feldspathic fragmental breccia).
Specimens: 5.3 g at Cascadia; main mass with Matthew Stream.
I have not studied Northwest Africa 14280.
Meteoritical Bulletin Database